Implement OTP Authentication using AWS SNS in Node js

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Mohd Aatif

Software development Company

Implement OTP Authentication using AWS SNS in Node js

Introduction

Secure user Authentication is one of the challenging part in digital world, One Common way to address this challenge is One Time Password(OTP) verification process. In this blog post we will explore AWS SNS(Simple Notification Service) in Node js to Implement OTP verification Seamlessly. AWS SNS provides reliable and scalable infrastructure for sending SMS messages, Making it an ideal choice for otp delivery. So let’s dive in and learn how to Integrate OTP verification AWS SNS in Node js.

Prerequisites

Before getting started, please ensure that you need to have these things.

  1. AWS account with appropriate permission to access SNS.
  2. Node js installed in your machine.
  3. Basic knowledge of Javascript and Node js.
  4. A Code editor installed in your machine.

What is one time password (OTP)?

A one time password (OTP) is an automatically or manually generated numeric or alphanumeric string of characters that authenticates a user for a single transaction or login session. An OTP is more secure than a static password, especially a user-created password, which can be weak and/or reused across multiple accounts.

Setup AWS SNS

To begin, First you need to have an AWS account, once you create the account Log in to your AWS console and navigate to the AWS SNS service and generate credentials for accessing AWS SNS. Click on the link provided below for redirection to AWS SNS service console.

https://aws.amazon.com/sns/

AWS SDK module and setup environment file

I assumed that you have already installed node js and the respective web framework (whether it is express js or any other) for all node js web framework the process will be same, for using AWS SNS service we need to install aws sdk npm module and other required dependencies. The aws-sdk module provides the necessary tools to interact with AWS services.

Screenshot_2023_05_30-1.png

Create a new file named .env in the project’s root directory. Add the following variables to it.

Screenshot_2023_05_30-2.png

Replace the placeholders once you got this information from the AWS console.

Generation and verification of OTP

First we need to initialize the aws-sdk module and it’s required configs

Screenshot_2023_05_30-3.png

Here is the function for generate a random otp, using that random otp we prepare the payload with an message and phone number(Phone number should have country code), for send the generated otp to the user we need to call the aws-sdk publish function with that payload, after successfully runs the function a response returns that contains a messageId and requestId those will be used for otp verification, we have stored this information in database table(In our case UserOtp table) for future references.

Screenshot_2023_05_30-4.png

Note :- userOtpsRepository and UserOtps denoted user otp table and the validation filtration domain object.

Here is the verification function, for verification of otp we need to retrieve the sent otp from user otp table by using session key that was generated at the time of otp generation, once we get the record, we calculate the difference of current time and the otp sent time if the difference is not equal to zero, it means this is the valid otp.

Screenshot_2023_05_30-5.png

Conclusion

In this blog post we have discussed the process of implementing otp authentication using AWS SNS in Node js.

In Addition this otp verification process improves the security and scalability of applications.

Thanks for reading, I hope you have found this useful.

Software development Company
Mohd Aatif

Hi there, I hope you are enjoying reading a blog post. Enhance your Node.js application security with ease by implementing OTP (One-Time Password) authentication using AWS SNS. Discover how to leverage the power of AWS SNS to ensure secure and reliable authentication for your users. Take your Node.js development to the next level with this comprehensive guide. Thank you for your time

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